#!/usr/bin/env python3
"""
Download Piper TTS models if not present
This script can be run during Docker build or at startup
"""

import os
import urllib.request
import json

def download_piper_model():
    """Download Piper model if not present"""
    models_dir = "models"
    os.makedirs(models_dir, exist_ok=True)
    
    model_name = "en_US-lessac-low"
    model_file = f"{model_name}.onnx"
    config_file = f"{model_name}.onnx.json"
    
    model_path = os.path.join(models_dir, model_file)
    config_path = os.path.join(models_dir, config_file)
    
    # Check if model already exists
    if os.path.exists(model_path) and os.path.exists(config_path):
        print(f"Model {model_name} already exists, skipping download")
        return
    
    print(f"Downloading Piper model: {model_name}")
    
    # Hugging Face model repository
    base_url = "https://huggingface.co/rhasspy/piper-voices/resolve/main/en/en_US"
    
    try:
        # Download model file
        if not os.path.exists(model_path):
            print(f"Downloading {model_file}...")
            url = f"{base_url}/{model_file}"
            urllib.request.urlretrieve(url, model_path)
            print(f"Downloaded {model_file}")
        
        # Download config file
        if not os.path.exists(config_path):
            print(f"Downloading {config_file}...")
            url = f"{base_url}/{config_file}"
            urllib.request.urlretrieve(url, config_path)
            print(f"Downloaded {config_file}")
            
    except Exception as e:
        print(f"Error downloading model: {e}")
        print("Model download failed, but app will continue with other engines")

if __name__ == "__main__":
    download_piper_model()